Revolving fan.



E. W. DENMAN REVOLVING FAN.' APPLlcAnoN man 1^N.4.|91.

Patented July 2,1918.

.N .DI

R 0 T N E V N E or! W Denman.

' ATTORNEY` STATES PTEN T FFICE. y

.EARL W. DENMAN, or WILKINSBURG, PENNSYLVANIA, AssIeNoR 'Io WFs'.1:INeHouslay yErre;critere AND MANUFACTURING COMPANY, A CORPORATION or riiNNsYmrANIA.` h

To all whom it may concern Revolving Fans, of which they following is a specification. y

My invention relates to revolving fans andle'speciallyto gyratory electric fans that are adaptedto turnon axes of rotationwhile vsimultaneously and automatically turning f around external axes of revolution.

One `object of my invention is to provide `a g ratory fan offsimple construction which sha1 be provided with positively actuated mechanical means for effecting the rotation of therfanv support by power derived from the rotating shaft that carries the fan blades.`

`Another object of my invention is to provide a fan of the above-indicated type which' maybe readily-adjusted to deliver aireither horizontally or at various anelesof inclination without disengaging the c riving mechanism 'through' which the `fan structurefis revolved A vfurther object of my invention is to provide `a fan ofthe rabove-indicated type in which the positively actuated mechanism is Arigidly associated with the fansupport and is in frictional engagement with a portion of the stationary hanlgler or other supporting means laround w volves, whereby `the revolution of the fans around their external axes may be temporarily arrested withoutdamaging any of the members or interrupting the driving connection between the fan motors and the stationary support. y

In theaccompanying drawing, Figure l is a" view, partially in section and partially `in Side elevation, of a revolving fan mechanism constructed in accordance with my invention; Fig. 2 is a sectional viewfalong the Specication of Letters Patent.

Application med January 4, 191e. serial No'. 70,259.

ich the fan re- REVOLVING FAN.

Patented July 2, 1918.

a cylindrical member, 7 that is provided with inwardly extending arms Sto `support`- an internally threaded annular member 9 which is engaged by `the `corresponding threaded upper end of a vertical shaft `10. The lower end of the shaft l0 is also threaded and engages a threaded recess 11gt in a bottom casing member 11, the exteriorV of located above the bracket 5 and rests upon a shoulder formed upon the member 7 The members', 1l and 12 thus compose a generally spherical structure. `The bracket 5 1s provided with an upwardly extending sleeve'lll that surrounds the shaft 10 and is rotatably supported in ball bearings 15 that are located in a ysuitable ball-race betweeny the sleeve 14 and the bottom casing mem-V ber 11. a i t y V As the fan motors l and 2 ma be of any desired type, their structural etailsAvill not be described. A ear-box 16,thatis se-` cured to the rear endell of the fan motor 1,` contains the mechanism for driving the bracket around its support by means of power derived from they armature shaft '17 of the motor. The driving mechanism com",- prises a pinion 18 that is secured to the armature shaft 17 by any suitable means, such, as coperating clutch teeth 19 that are provided, respectively, on abutting" ends of the shaft 17 and a short shaft 20 upon which the pinion 18 is keyed. y The'clutch, teeth 19 are maintained in engagementwith each other by means of a plug 21 iny a threaded opening in the wall of the gear box 16.` `The pinion 18 meshes with a gear wheel '22 that is mounted on a short shaft 23 Which'issuplported by the walls of the gear box. Thel shaft 23 projects, at one "end, beyond the wall of the gear box 1G and is secured ,to wa flexible shaft`24 by means `of a suitable coupling 2491. A friction Wheel 25 is mounted on a shaft 26 that is secured to the other end ofthe flexible shaft 245 by-means of a coupling 24". The shaft 26V is Irotatably mounted in a bearing 27 that is carried at one end of an arm 28. The arm 28 is pivotally supported, at its other end, bymeans of a pin 29 in threadedl engagementwith a lu 1() provided on the Wal of the bracket 5 e y ower end of the member? is yprcrf videdk with a reducedv portion 7a upon which maljlyU maintamed lll is mounted aring 3 1 that is provided with ular gr'ovef32- The lung 311s' norlll.

desireddegree of eompressionby means ot a nut 34 that engages screw threadsmn-the lower end ot vthe member 7. The friction I Wh'eel y275" is 'adapted to run-Within the "grxjvel 32",' andthe engagingsurta'ces ofthe' jvvheel and' groeve, respectively', are" preferablyY faced? vifithl" ai :material hav-ing jla high coefiiA cieiuto'f"rition", sueltasle'atlierl y 'The `rfriction vvheel Q5 maintained Vin en Springf lisadjustablysecuredtolthe baise,

sername prevideawah a head 36a.-

'speelde radium-1 1# hanging? the? relative" Adianifeters vot` the' The 1degree of ne;exteaaauyahieaded,png a7-ispreviaea,

at endend, with a''shfoulderSS thatengages an interna' Aly-thi'eaded' l projection 39 that is` provided "0""the` "base" ofthe' lbracket 5. tension of thev Spring ,35 may` be regulated b" :faltei'iigthe position ofthethreaded plug Frein 'the':toIfegoing"I fit s evident 'that the retatiaeffaef arma are Shaft it iwin' be transmitted throughliithei 'pinion `"18, the 'gear WheellQQand the ffXib'le shaft 24k. tothe friction fvvheel' 25; 'and that thee'ngagernentv ot t fefti'i'eti'onvvheel 'Qiylith the groove'BQ will turii thebr'acket '5 and'lth'e'tan motors 2j arden@ the axis of; 'the hangeiya The b@ ClllfdL by the'fr1ng'31 and the member 7, the ring 31v beingf permitted teV 'rotate/ relatively to v the member: 7, it sufficient povve'r'jis applied to it" to overcome the4 triotional" force exerted bmispfmgf.33." r

` The tan m'otor's 1 andQ are loselymounted'up'en'their-respective pivotsy 3 and 4: and

t engagement' with the shoulder formedby the reduced portion 72 by means* of an annular double-concave springeg vvhiehgjs` maintained under any nut l1 through link mechanism, such as 'is described and Vclaimed in a copending applicationotOliver S. Jei'i'iiiiigsySerial VB10117591,`

tiled January' 6, 1915, and assigned "to the lestinghouse Electric & vManu taeturing Company. It is evident that the fankmotors may beniaintained at any desired fdegifeegot mechanism by reason ot the `flexible shaft connecting the reduction vgearing land thel other vvelll *known form" of flexible ,'drivingl connection ymay be employed betvveeny the'y shaft 23 andthe friction vvheel 25, "such, .for example, i as universal l j oints co'nne'otedy by me'mbersinEsliding'engagement;

EnergymayI be supplied 1 'and 2 fin' any Convenient Vmannerv means contained in b'rush'holders 50v and S1-arid` Ainclination Withoutk disturbing the driving vice 511 andaroperating chainfor eor'djl;

motors 'may be arranged, in 'any convenient manner, not showny on `the drawing'.4

l lhen` the tan 'In 'tors are"y positioned lvv'ithl` the axes ottheir shafts vhorizontal, revolution of the hanger isproduced solely" by pov'vei' transiiiittedg' through the reduction gearing 'and *the trictoi'i'al elements; llVlieil,v however-,fthe tails aretiltedeitherupvvardly or downwardly,` the Well known paddle Wheel action cfg-the fan-"biases will 'either .assist"'orretard' the driving efect ot this mechanism, *depending upon the direction ot The ciondaaofssupplyiag energy; @when i tilt, the= direetionfof'retation otjfthe.l fan blades; and the consequent direction Jin ywhich theltorqule is' e`Xferted-`` This'gtorqu'efmay, in some cases, be l sufficient" toi'Irota'ftel the bracket. 'In such ca'sefno driving ypovverfis' transmitted by thev gear and VJrietioral memjbers, which thealperfaafthe-fuman of a 110y speed :regulator maintaining a fixed Speed' ratio between]t the l fan blades# and1 the bracketfin; accordance the f yamount.oft frictional engagement, fas determined `j the tension ofthe adjusting'spripg;

While I have shown my inveftiontas' apl` itis-not so `limited butli's suseeptible of vvari-y ous modifications Within the scope' ofthe apj pendedclaims.` j' l I claim as my iiiveiitionz -1. Th@J Combinati@ a ai a, rotatable. Supi port, o t amotor pivotally mounted thereon, reduetionf gearing vcarried by said motorv and driven thereby, la flexiblev cou'p'ling!y device; ,i

and relatively' movable" members finfadj ustable"y frictional engagement' operativelyy een-` nected' to' saidgeari'ngfthrough saidqiexible coupling" device for? rotating` Said support,"

' vvhereby" thefangular positions of the' motor and gearingfarouiid 'theinciter"pivotv 75 p members that arre`iii tiictional engagement. i n It A1s to' be understood,"V however, that` any,

may be adjusted Without affecting the frietional engagement of the said members.

2. The combination with a rotatable support, of a motor mounted thereon, relatively stationary means for supporting the said rotatable support, reduction gearing driven by said motor and rigidly carried by said rotatable support, a member carried by said stationary support, and a second pivotally mounted member in frictional engagement with said first-named member and flexibly connected to said reduction gearing for rotating the said rotatable support.

3. The combination with a rotatable support, of a motor mounted thereon, relatively stationary means for supporting the said rotatable support, reduction gearing driven by said motor and rigidi carried by said rotatable support, -a flexi le coupling mechanically associated With said reduction gearing, a member carried by said stationary support, and a second member in adjustable frictional engagement with said first-named member and connected to said reduction gearing by said flexible coupling device for rotating the said rotatable support.

et. The combination with a rotatable support, of a motor mounted thereon, relatively stationary means for supporting the said rotatable support, reduction gearing driven by said motor and rigidly carried by said rotatable support, a member carried by said stationary support, and a second ypivotally mounted member in adjustable rietional engagement with said first-named member and flexibly connected to said reduction gearing for rotating the said rotatable Support.

In testimony whereof I have hereunto subscribed my name this 28th day of Dec., 1915.

EARL W. DENMAN.

Copies of this patent may be obtained for ve cents each, by addressing the Commissioner of Patents, Washington, D. c. 

